How is the monthly loan payment (EMI) calculated?

The monthly payment is calculated using the standard amortization formula: EMI = [P × r × (1 + r)^n] / [(1 + r)^n - 1], where P is principal, r is monthly interest rate, and n is total number of monthly payments.

Is a lower interest rate always the cheaper loan option?

Not necessarily. A loan with a lower interest rate but a much longer loan duration (e.g. 30 years vs 15 years) will have lower monthly payments but significantly higher total interest paid over the entire term.

Can I compare a 15-year mortgage against a 30-year mortgage?

Yes! Enter the same principal balance with 15 years in Loan A and 30 years in Loan B to see the exact trade-off between monthly payment and lifetime interest.

Does this calculator include extra fees or insurance?

This tool computes principal and interest. If your loan has closing costs or origination points, you can roll them into the principal balance for full comparison.

Is my financial loan data stored or shared with lenders?

No. All calculations run strictly in your web browser. No quotes or private financial data are ever stored or shared.

Loan Comparison Calculator (Side-by-Side)

Compare two or three loans side-by-side to find the lowest monthly payment and maximum interest savings.

100% free
Private in browser
No signup
No watermarks

Option 1

Loan Principal Amount ($)

Interest Rate (%)

Term (Years)

Monthly Payment:$586.98

Total Interest:$5219.07

Total Cost:$35219.07

Option 2

Loan Principal Amount ($)

Interest Rate (%)

Term (Years)

Monthly Payment:$694.28

Total Interest:$3325.51

Total Cost:$33325.51

Comparison Verdict

🏆 Loan Offer B saves $1893.56 overall

Monthly difference of $107.30/month and lifetime interest savings of $1893.56.

Rate this tool

Be the first to rate — helps others and improves this page.

About Loan Comparison Calculator (Side-by-Side)

The Loan Comparison Calculator lets you evaluate multiple loan, auto finance, or mortgage quotes head-to-head. By analyzing variations in interest rates, loan lengths (terms), and principal amounts, this tool highlights exactly how much you will pay each month and how much total money you will save over the life of each loan.

How to use Loan Comparison Calculator (Side-by-Side)

Enter Loan A Terms: Input the loan principal, annual interest percentage, and duration in years for your first quote.
Enter Loan B Terms: Input the competing terms, promotional interest rate, or alternative repayment tenure for Loan B.
Analyze Savings Difference: Compare monthly EMI payments, cumulative lifetime interest, and see which option saves you more money.

Key features

Side-by-Side Dual Comparison: Simultaneously view the financial breakdown of two competing lending offers.
Automated Net Difference: Calculates the exact monthly dollar savings and total lifetime interest savings automatically.
Standard Amortization Formula: Uses standard fixed-rate compound amortization formulas trusted by banks worldwide.
Flexible Tenures & Rates: Supports short auto loans, 15/30-year home mortgages, or multi-year personal debt loans.

Frequently asked questions

How is the monthly loan payment (EMI) calculated?: The monthly payment is calculated using the standard amortization formula: EMI = [P × r × (1 + r)^n] / [(1 + r)^n - 1], where P is principal, r is monthly interest rate, and n is total number of monthly payments.
Is a lower interest rate always the cheaper loan option?: Not necessarily. A loan with a lower interest rate but a much longer loan duration (e.g. 30 years vs 15 years) will have lower monthly payments but significantly higher total interest paid over the entire term.
Can I compare a 15-year mortgage against a 30-year mortgage?: Yes! Enter the same principal balance with 15 years in Loan A and 30 years in Loan B to see the exact trade-off between monthly payment and lifetime interest.
Does this calculator include extra fees or insurance?: This tool computes principal and interest. If your loan has closing costs or origination points, you can roll them into the principal balance for full comparison.
Is my financial loan data stored or shared with lenders?: No. All calculations run strictly in your web browser. No quotes or private financial data are ever stored or shared.